# SDR DALA2026011200251

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2026
- Submitted: January 12, 2026
- Operation: Air carrier
- Aircraft: [N402DX](https://openairdocs.org/aircraft/N402DX), registered now
- Make and model: Airbus A330-941
- Registry model: [Airbus A330-941](https://openairdocs.org/model/airbus-a330-941) (OpenAirDocs)
- Aircraft serial: 1920
- Aircraft time: 28,161 hours, 3,213 cycles
- System (JASC): [2900 · Hydraulic Power System](https://openairdocs.org/jasc/2900)
- Part: Controller
- Part number: 4020Q103
- Part serial: NP0054
- Condition: Faulted
- Location: Nr 1
- Part time: 28,129 hours, 3,210 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026011200251

## Discrepancy

DUE TO HYD B PRESS LOW AND LO LVL ECAM MESSAGE.   REPLACED PUA FIN 5240JM ALONG WITH THE RELIEF VALVE AND CHECK VALVE IN BOTH THE YELLOW AND BLUE RESERVOIRS. (7803688)

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